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Compact high-pressure plunger variable double pump

A high-pressure column and compact technology, which is applied in the field of plunger oil pumps, to achieve the effects of compact overall structure, reduced weight, and reduced overall volume

Active Publication Date: 2012-05-23
SAIKESI HYDRAULIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another example Image 6 and Figure 6a , Figure 7 and Figure 7a Shown are the two comparison patterns of the flow plate, and the oil tanks are all single-layer structures in structure, so they are only suitable for single-pump structures

Method used

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  • Compact high-pressure plunger variable double pump
  • Compact high-pressure plunger variable double pump
  • Compact high-pressure plunger variable double pump

Examples

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] like Figure 1 to Figure 4a As shown, the symbol numbers are as follows: transmission shaft 1, large bearing 2, swash plate 3, housing 4, return plate 5, plunger shoe assembly 6, ball head body 61, cylinder body 7, spline hole 71, column Plug hole 72, distribution plate 8, oil suction ring groove 81, oil outlet ring groove 82, small bearing 9, positioning pin 10, rear cover 11, coupling sleeve 12, second valve sleeve 13, second valve core 14, first Valve sleeve 15, first spool 16, drive ring 17, adjustment spring 18, end cover 19, variable displacement piston 20, dial block 21, adjustment rod body 22, compression spring 23.

[0036] According to the embodiment of the present invention, a compact high-pressure plunger variable variable double pump includes a fixedly matched housing 4 and a rear cover 11. The inner cavity of the housing ...

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Abstract

The invention discloses a compact high-pressure plunger variable double pump, which comprises a shell, a rear cover, a cylinder body, a plunger piston shoe assembly, a swash plate and a thrust plate which are fixedly matched with one another, wherein a positioning pin is arranged at one end of the outer ring edge of the thrust plate, and the other end of the positioning pin is inserted into and matched with the rear cover; an oil suction ring groove is formed on one side of the inner surface of the thrust plate, and is oppositely matched with an oil suction on the valving surface of the cylinder body; and two oil outlet ring grooves with equal oil outlet apertures are formed on the other side of the inner surface of the thrust plate, and the two oil outlet ring grooves are oppositely matched with an oil outlet on the valving surface of the cylinder body. When an oil pump is used in engineering machinery, the compact structure and highly-integrated function of the oil pump is increasingly perfected. Through the structure of the invention, the function of the double pump is realized by a single cylinder body, and the integral structure is suitable for the application to the engineering machinery, realizes the output function of oil sources with the same flow rate, can meet the requirement of the synchronism of an external actuating mechanism effectively, and improves the using efficiency; and the compact structure of one pump for dual oil output is favorable for improving the actual using effect and prolonging the actual service life, and has higher reliability.

Description

technical field [0001] The invention relates to the technical field of plunger oil pumps in engineering machinery, in particular to a compact high-pressure plunger variable double pump. Background technique [0002] With the continuous improvement of technical requirements, construction machinery with double pump oil supply system has been widely used. In view of the need for high oil pressure, a double pump with plunger structure is necessary. The current plunger type The double-connected pump is mostly an axial plunger structure, and there are mainly two structures: a series double pump and a parallel double pump; Disc Axial Piston Variable Variable Pump" (Notice No. CN201053377Y); consists of two cylinder blocks, two sets of plungers, shoe sets, two pressure plates, two flow distribution plates, two variable swash plates, and one swash plate support It is composed of a seat, a housing, an input shaft and a variable control device. Since the axial forces on the two cylind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/22F04B1/30
Inventor 吴赛珍高志明
Owner SAIKESI HYDRAULIC TECH CO LTD
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